Roller-skate



(ModeL) M.- P. RICHARDSON.

ROLLER SKATE.

Patented Feb. 16,,1886.

UNITED STATES PATENT OFFICE.

MILLARD F. RICHARDSON, or LIBERTY, INDIANA.

- V ROLL R-SKATE.

SPECIFICATION forming part of Letters Patent No. 336,437, dated February 16, 1886.

1 Application filed April 2-2, 1885. Serial Nb. 163,053. (Modeh) To aZZ whom it may concern:

Be it known that I, MILLARD F. RICHARD- soN, a resident of Liberty, in the county of Union and State of Indiana, have invented certain new and useful Improvements in Roller-Skates, of which the following is a specification. I l

My invention relates to an improvement in roller-skates. r

The object of my invention is to provide improved means for adjusting and locating the tension-spring interposed between the rockerframe and the hanger frame or bracket.

Another object of my invention is'to make the rocker and hanger frame of but two parts or pieces,which reduces the depth or height of the combined frame, bringing the axle closer to the foot-board than when an interposed plate or piece is placed between the rocker and hanger frame to regulate the tension.

Another object of my invention is to provide means for adjusting the tension and regulating the spring upon the outside of the bracket or hanger frame.

Another object of my invention is to provide suitable stops on the rocker-frame, which strike against the bracket to limit the rocking movement of the foot, all of which will be fully set forth in the description of the accompanying drawings, forming a part of this specification, in which Figure 1 is a longitudinal cross-section o my improvement; Fig. 2, a rear elevation of the'same; Fig. 3, a perspective view of the tension-arm.

A represents the ordinary footboard, made either of wood or metal; B, the rollers; O, the main axle; D, the hanger frame or bracket, secured to the foot-board in any desired manner. This hanger is provided with pendent arms12,between which armsthe rocker-frame F is pivoted in the following manner:

E represents the rocking or transverse axis of the frame,the forward point of which passes through and is supported in the pendant 1. Pendant 2 is provided with a vertical slot,- 3,

' to allow vertical play of the rear end of the transverse axis E under the spring tension and adjustment.

4 represents a spring-seat formed on the upper side of the rocker-frame F.

5 5 represent coiled springs.

6 represents seats for the upper end of the coiled springs formed in the bracket D. 7 represents a ledge, preferably cast on and withthe bracket D, and forminga rear extenvided with a flange, 10, at the upper end, and

a screw-hole, 11.

12 represents a slot in the lower end of the arm, through which passes the transverse axis -E. The slot 3 in the pendent arm 2 is sufficiently deep to allow the axis E to rise and fall in the slot to allow the springs 5 to be adjusted to any desired degree of tension. The orifice in the pendent arm 1, through which the pin E passes, must be sufficiently large to allow the axial pin E to rock as its rear end moves through theslot 3. The slot 12 in the tension-arm is made of sufficient depth to prevent the pin E from striking the tension-arm under jars and strains of the springs, so as to avoid shock to the operator. When set-screw 8 is turned into the nut 7, it draws tension-arm 9 and the axial pin E upward, compressing springs 5, and thereby increasing their tension.

Z Z represent lugs formed upon the rear end of the rocker-frame F. They areformed bya rearward projection of the metal, preferably cast on and with the frame F, and they are a suffioient distance apart to form a channel or groove for the pendent arm 2 to move freely in within the range of the desired movement of the rocker-frame F; butthey are sufficiently close to the pendent arm 2 to strike the same and limit the canting or rocking motion of the rocker-frame F, and thereby arrest the side or rocking movement of the foot. By employing the tension-arm 9 upon the rear side I avoid the use of an interposed plate between the springs and the rocker-frame, thereby reducing the distance from the foot-board to the axle G, bringing the skates lower down than can be accomplished where an interposed adjusting-plate is employed.

I do not wish to limit myself to the use of the coiled springs 5 herein shown, as other 5 springs can be employed and accomplish the general purposes of invention herein shown' and described.

I do not claim in this case anything described and claimed in my application filed March 2, [C 1885, Serial No. 157,525.

Having described my improvement, what-I claim as my invention isl 1. In a roller-skate, the combination of bracket D,formed with pendent arms 1 and2,

1 rocker-frame F, journaled on said arms by means of axis E, having a vertical play in arm 2, and the separate adjusting tension-arm 9, having an opening for the passage andsupport of one end of the axis E, and provided 'With means for its adjustment, substantially as described.

2. A hanger device for a roller-skate, cons'isting, substantially, of the bracket D, rockerframe F, springs 5, tension-arm 9, and setscrew 8, substantially as herein specified.

'3. In combination with the bracket D, rocker-frame F, springs 5, tension-arm 9, provided with slot 12, and thependent arm 2,pro vided with the slot 3, substantially as herein specified.

4. In combination with the bracket D, having the slotted pendent arm 2, the slotted tension-arm 9, engaging with axis E, and the setscrew 8, for adjusting the springs 5, substantially as herein specified.

5. In combination with bracket D, having pendent arms 1 and 2, rocker-frame F, jour- .naled between saidarms, and formed with lugs Z on its under face on opposite sides of arm 2, to permit movement of the latter, and coiled springs 5, fitting in bracket D, and frame F, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand.

' MILLARD F. RICHARDSON.

Witnesses:

JNo. S. BoEBUcK, J r., M. E. MILLIKAN. 

